GW could moan and ♥♥♥♥♥ ONLY if mod was called "Space Hulk™", "Warhamer 40000™" or any other trademarked name. If one made mod called "Futuristic Decrepit Space Vessel crawl" and modelled space marines+ genestealers GW could do nothink as they can't trademark dudes in "power armor"™ or alien race with claws.

GW could moan and ♥♥♥♥♥ ONLY if mod was called "Space Hulk™", "Warhamer 40000™" or any other trademarked name. If one made mod called "Futuristic Decrepit Space Vessel crawl" and modelled space marines+ genestealers GW could do nothink as they can't trademark dudes in "power armor"™ or alien race with claws.

Any artistic likeness though would garner their attention. Cyanide made a Blood Bowl facsimile called Chaos League and was shut down summarily by court order. I believe the same would happen here.

You can easily replace any textures with anything you want - just make sure the tile and pixel dimensions are the same for the imported textures, and you can create nearly anything. On the official forums, people have already started creating Mine tilesets - and they are looking really good! http://s66.photobucket.com/albums/h271/Phittte/MineHmm.jpg